1427980409873 has 2 divisors, whose sum is σ = 1427980409874. Its totient is φ = 1427980409872.

The previous prime is 1427980409827. The next prime is 1427980409893. The reversal of 1427980409873 is 3789040897241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1148084391169 + 279896018704 = 1071487^2 + 529052^2 .

It is an emirp because it is prime and its reverse (3789040897241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1427980409873 - 2²⁸ = 1427711974417 is a prime.

It is a super-2 number, since 2×1427980409873² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1427980409893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713990204936 + 713990204937.

It is an arithmetic number, because the mean of its divisors is an integer number (713990204937).

Almost surely, 2^{1427980409873} is an apocalyptic number.

It is an amenable number.

1427980409873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427980409873 is an equidigital number, since it uses as much as digits as its factorization.

1427980409873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 1427980409873 in words is "one trillion, four hundred twenty-seven billion, nine hundred eighty million, four hundred nine thousand, eight hundred seventy-three".